Step 1: Materials

Materials: Regular exercise book, Rubberband, Hands, A working brain. First, get a regular size exercise book. But, the bigger the better. Some types of paper wouldn't work, so it's better not to use counter books.

Step 2: Cut...

Tear about an inch off the edge of the length of the page.

Step 3: Roll...

Roll it up till about half the length... then flatten it.

Step 4: Folding...

Then fold the flat part in half... as many times as possible. I managed two, which is usually the max.

Step 5: More rolling...

Then roll up the rest of it.

Step 6: Ready the cannons and...

Now fold it in half... It might be really hard so you can use a tabletop to help... Aand your'e done!

Step 7: SHOOT!

Just added this step in case someone stumbled onto this without knowing how to use it. Just use your fingers as a slingshot. This can be really painful, so be careful!

EDIT: I made this instructable a few years ago as a ( still pretty immature ) 14 year old, so forgive me for the terrible pics and confusing language XD

Hey! Put that down; somebody's going to lose an eye with that thing. :-D

Not too bad for a first I'ble. Good spelling and punctuation, with just a couple of typos. A few of the pictures could use a bit of practice on macro photography, but overall they're clear enough to see what you're doing.